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3 years ago

5

Mr. brown sells horse supplies. A pair of riding gloves sells for $16. He says he will make $144 if he sells 9 pairs is it reaso

nable or not

2 answers:

kap26 [50]3 years ago

6 0

16 X 9 = 144. Yes this is completely reasonable.

AveGali [126]3 years ago

6 0

Yes because 16*9 is 144

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Find a particular solution to y" - y + y = 2 sin(3x)

leonid [27]

Answer with explanation:

The given differential equation is

y" -y'+y=2 sin 3x------(1)

Let, y'=z

y"=z'

$\frac{dy}{dx}=z\\\\d y=zdx\\\\y=z x$

Substituting the value of , y, y' and y" in equation (1)

z'-z+zx=2 sin 3 x

z'+z(x-1)=2 sin 3 x-----------(1)

This is a type of linear differential equation.

Integrating factor

$=e^{\int (x-1) dx}\\\\=e^{\frac{x^2}{2}-x}$

Multiplying both sides of equation (1) by integrating factor and integrating we get

$\rightarrow z\times e^{\frac{x^2}{2}-x}=\int 2 sin 3 x \times e^{\frac{x^2}{2}-x} dx=I$

$I=\frac{-2\cos 3x e^{\fra{x^2}{2}-x}}{3}+\int\frac{2x\cos 3x e^{\fra{x^2}{2}-x}}{3} dx -\int \frac{2\cos 3x e^{\fra{x^2}{2}-x}}{3} dx\\\\I=\frac{-2\cos 3x e^{\fra{x^2}{2}-x}}{3}+\int\frac{2x\cos 3x e^{\fra{x^2}{2}-x}}{3} dx-\frac{2I}{3}\\\\\frac{5I}{3}=\frac{-2\cos 3x e^{\fra{x^2}{2}-x}}{3}+\int\frac{2x\cos 3x e^{\fra{x^2}{2}-x}}{3} dx\\\\I=\frac{-2\cos 3x e^{\fra{x^2}{2}-x}}{5}+\int\frac{2x\cos 3x e^{\fra{x^2}{2}-x}}{5} dx$

8 0

2 years ago

I need help it’s due in 10 mins ASAP <br> I’ll mark you as a brainlist please help

Lady_Fox [76]

Take DEBC a parralelogram
Parralel sides are DE and BC
THEREFORE,
1/2*(a+b)*h
1/2*(6+15)*h
1/2*(21)*h=0
10.5*h=0
h=-10.5

3 0

3 years ago

2(2x - 8) = x - 46 ?

Anna [14]

Answer: X = -10

Step-by-step explanation:

Times two to the parentheses

Minus X from both sides, left with 3X-16=-46

Add 16 to both sides 3X=-30

Divide both sides by 3

Answer X=-10

4 0

2 years ago

Read 2 more answers

True or False: If your expression contains more than one set of parentheses, you should evaluate all of them before doing anythi

irga5000 [103]

Answer:

False

Step-by-step explanation:

Parentheses should be evaluated first according to PEMDAS in every situation.

Parentheses

Exponents

Multiplication

Division

Addition

Subtraction

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3 years ago

TIMED! Can somebody please help me with this?

kondaur [170]

Answer:

use quizlet

Step-by-step explanation:

7 0

2 years ago